Re: [Elecraft] Headset

[Ian White]

>I have a set of KOSS SB 40's and they're great on the RX side but the
>cheap dynamic mic that comes as part of it sounds like @#*^%#@

But weren't we discussing the SB-forty-FIVE? 

The *electret* mic in the Koss SB-45 is excellent, and works very well
with the K3 for a wide range of different voices. For those who prefer a
lighter headset with on-ear earpieces, the Koss CS-100 gives equally
good results. 

Both the SB-45 and the CS-100 can be highly recommended.


73 from Ian GM3SEK


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[Elecraft] KX3 KCOMM & CW Skimmer

[Peter D. Vouvounas]

If any of you are familiar with KComm using a KX3 & CW Skimmer I could use
ur help.  Trying out several logging and control solutions prior to FD.

 

I have not been able to get KComm to connect with Skimmer.  Perhaps one or
more of you have more experience with this app and could provide some
insight.

 

73

 

PeterV WB3FSR

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Re: [Elecraft] RFI on K3s

[Edward R Cole]

One can convert red/black zip wire pretty easily:  zip wire separates 
by pulling the red side away from the black so you  end up with two 
separate wires (you can even leave the power-pole connector on one 
end).  Then twist the two wires to obtain twisted-pair.  No waste of 
those existing power cables.



73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com

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Re: [Elecraft] KXPA100- How impactful to making contacts?

[Bob Nielsen]

Has anyone tried using a RM Italy HLA 305 or 305V with a K2, KX2, K3 or 
KX3?  The review in QST a few months ago was positive.  Over 200 watts 
out for less than $700 (not counting an antenna tuner).


Bob, N7XY

On 6/21/16 7:46 PM, a45wg wrote:

Using 15 W out from my K3-S (Max power for your KX3 as you indicated) my KPA500 
pushes out 330 Watts … Why bother with 100W when you can have 330 ??  There is 
however a difference in purchase price $2k vs $800 (aprox) - and if you need a 
tuner that will be another $700.

Sorry to say I kept the KX3 for mobile/QRP and just got a K3S, KAT500 and 
KPA500.

Enjoy your dilemma

Tim




On 21 Jun 2016, at 21:08, Road Runner  wrote:

Have had my KX3 for a couple of weeks and love it. Biggest issue I have is even 
at 15 watts, unless conditions are right, I am having issues making DX 
contacts. The KX3 is connected to an Alpha Delta 80-6 meter fan dipole. I have 
been thinking about getting the KXPA 100 but wonder whether it will be enough 
of a bang for the buck. I use this at a summer cottage, at home I started with 
a Kenwood Ts-590SG and eventually upgraded the rig with an Ameritron 811H to 
get more punch. I have no problems getting picked out of pileup so now...
So my question is for those of you that have gone the upgrade path to 
KXPA100... Did you get enough punch or are you wishing you had gone with more 
power? I am not really too crazy about going all the way to the KPA500...

Sent from my iPad
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Re: [Elecraft] Elecraft] RFI on K3s

[Clay Autery]

It IS really nice cable though... Used that type and multi-conductor of
same spec to wire helicopters when I was a Aviation MTP...  Beautiful stuff.

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MONTAC Enterprises
(318) 518-1389

On 6/21/2016 4:43 PM, Grant Youngman wrote:
> I'm still wondering why anyone would BUY a bit of 10 ga twisted pair. It 
> blows the mind.
>
> To each his own I suppose  but really?
>
> On the other hand, I do know one or two hams who will stare at a pair of RCA 
> plugs and a bit of wire with a deer-in-the-headlights look in their eyes and 
> then drive to RS to buy a cable. 
>
> smh ... 
>
> Grant NQ5T
>
> Sent from my iPhone
>
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Re: [Elecraft] KXPA100- How impactful to making contacts?

[a45wg]

Using 15 W out from my K3-S (Max power for your KX3 as you indicated) my KPA500 
pushes out 330 Watts … Why bother with 100W when you can have 330 ??  There is 
however a difference in purchase price $2k vs $800 (aprox) - and if you need a 
tuner that will be another $700. 

Sorry to say I kept the KX3 for mobile/QRP and just got a K3S, KAT500 and 
KPA500.

Enjoy your dilemma

Tim



> On 21 Jun 2016, at 21:08, Road Runner  wrote:
> 
> Have had my KX3 for a couple of weeks and love it. Biggest issue I have is 
> even at 15 watts, unless conditions are right, I am having issues making DX 
> contacts. The KX3 is connected to an Alpha Delta 80-6 meter fan dipole. I 
> have been thinking about getting the KXPA 100 but wonder whether it will be 
> enough of a bang for the buck. I use this at a summer cottage, at home I 
> started with a Kenwood Ts-590SG and eventually upgraded the rig with an 
> Ameritron 811H to get more punch. I have no problems getting picked out of 
> pileup so now...
> So my question is for those of you that have gone the upgrade path to 
> KXPA100... Did you get enough punch or are you wishing you had gone with more 
> power? I am not really too crazy about going all the way to the KPA500...
> 
> Sent from my iPad
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Re: [Elecraft] Elecraft] RFI on K3s

[Jim Brown]

On Tue,6/21/2016 5:41 PM, Walter Underwood wrote:

But thanks to the skin effect, silver plated power cables should conduct RFI 
energy BETTER than regular copper cables.


Yes, but those silver plated cables are being touted for for 
loudspeakers, where, as I noted in an earlier post, cable resistance 
matters at LOW audio frequencies (200 Hz and below). And the application 
we're talking about here is for DC power. In both applications, there is 
NO skin effect.


73, Jim K9YC


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Re: [Elecraft] Elecraft] RFI on K3s

[Walter Underwood]

But thanks to the skin effect, silver plated power cables should conduct RFI 
energy BETTER than regular copper cables.

I wasn’t going to respond again, but I’m weak. Eric should be invoking the 
“damping factor” on this thread soon.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Jun 21, 2016, at 4:18 PM, Jim Brown  wrote:
> 
> On Tue,6/21/2016 3:05 PM, riese-k3...@juno.com wrote:
>> its silver plated
> 
> Which, contrary to the hype from ripoff artists in the high futility world 
> will try to tell you, offers NO performance benefit over POC (plain, ordinary 
> copper) in even the most esoteric of audio systems.
> 
> There's a classic AES Paper from the '70s by E.E. Prof R. A. Greiner (now 
> emeritus) who was at Univ of Wis at Madison showing conclusively that exotic 
> loudspeaker cables are a complete waste of money, and the only thing that 
> matters for real world loudspeakers is low DC resistance. In other words, 
> short, fat copper.  The thing it affects is "damping factor" -- that is, the 
> ability of the very low Z output stage to damp a floppy woofer. Damping 
> factor is, by definition, the Z of the loudspeaker divided by the sum of the 
> output Z of the amplifier plus the resistance of the cable, and it's low 
> frequencies we're talking about, so it's DCR.
> There's a classic AES Paper from the '70s by E.E. Prof R. A. Greiner (now 
> emeritus) who was at Univ of Wis at Madison showing conclusively that exotic 
> loudspeaker cables are a complete waste of money, and the only thing that 
> matters for real world loudspeakers is low DC resistance. In other words, 
> short, fat copper.  The thing it affects is "damping factor" -- that is, the 
> ability of the very low Z output stage to damp a floppy woofer. Damping 
> factor is, by definition, the Z of the loudspeaker divided by the sum of the 
> output Z of the amplifier plus the resistance of the cable, and it's low 
> frequencies we're talking about, so it's DCR.
> 
> There's a classic AES Paper from the '70s by E.E. Prof R. A. Greiner (now 
> emeritus) who was at Univ of Wis at Madison showing conclusively that exotic 
> loudspeaker cables are a complete waste of money, and the only thing that 
> matters for real world loudspeakers is low DC resistance. In other words, 
> short, fat copper.
> 
> The thing it affects is "damping factor" -- that is, the ability of the very 
> low Z output stage to damp a floppy woofer. Damping factor is, by definition, 
> the Z of the loudspeaker divided by the sum of the output Z of the amplifier 
> plus the resistance of the cable, and it's low frequencies we're talking 
> about, so it's DCR.
> 
> The laws of physics have not changed since the '70s. :)
> 
> 73, Jim K9YC
> 
> 
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Re: [Elecraft] Headset

[Walter Underwood]

Reports on the list favor the Yamaha CM-500 or the Koss SB-45. Both have 
electret mics. In this price range (under a few hundred dollars), an electret 
mic is by far the best option.

The Koss SB-40 has a dynamic mic. I haven’t tried it, but making a good dynamic 
mic at that price is a huge engineering challenge.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Jun 21, 2016, at 5:19 PM, Jim Rhodes  wrote:
> 
> I wore out one SB-40 over 15 to 20 years,  so I bought another one. Get
> good audio reports on the rare instances I get on phone.
> On Jun 21, 2016 3:12 PM, "Ken Arck"  wrote:
> 
>> I have a set of KOSS SB 40's and they're great on the RX side but the
>> cheap dynamic mic that comes as part of it sounds like @#*^%#@ on TX,
>> regardless of how I've tried to compensate using the EQ
>> 
>> Ken
>> 
>> 
>> 
>> 
>> 
>> At 10:27 AM 5/26/2016, Dave Hachadorian wrote:
>> 
>>> I forgot to mention that the SB-45 also has a nice padded headband.  It
>>> doesn't irritate the top of my bald head as much as the rough webbing of
>>> the CM500.  Judging from the pictures of the crowds at Dayton this year,
>>> this could be a very significant feature for a lot of hams!
>>> 
>>> Dave Hachadorian, K6LL
>>> Yuma, AZ
>>> 
>>> 
>>> -Original Message- From: Mike Harris
>>> Sent: Thursday, May 26, 2016 7:14 AM
>>> To: elecraft@mailman.qth.net
>>> Subject: [Elecraft] Headset
>>> 
>>> Hi,
>>> 
>>> If I remember correctly the Koss SB45 headset has been offered as a
>>> suitable substitute for the K3 weapon of choice the Yamaha CM500. Any
>>> experience out there?
>>> 
>>> My much used CM500 are starting to shed the leatherette covering and the
>>> foam inside the cavities is wearing away. CM500 can be rather difficult
>>> to source.
>>> 
>>> Regards,
>>> 
>>> Mike VP8NO
>>> __
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>>> Message delivered to k...@arcomcontrollers.com
>>> 
>> 
>> 
>> --
>> President and CTO - Arcom Communications
>> Makers of repeater controllers and accessories.
>> http://www.arcomcontrollers.com/
>> Authorized Dealers for Kenwood and Telewave and
>> we offer complete repeater packages!
>> AH6LE/R - IRLP Node 3000
>> http://www.irlp.net
>> "We don't just make 'em. We use 'em!"
>> 
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[Elecraft] KXPA100

[Steve Hall]

The KPA500 is a great amp.  With 15 Watts in (as an example of a KX3), I am
measuring 375 Watts out.
WM6P
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Re: [Elecraft] Headset

[Jim Rhodes]

I wore out one SB-40 over 15 to 20 years,  so I bought another one. Get
good audio reports on the rare instances I get on phone.
On Jun 21, 2016 3:12 PM, "Ken Arck"  wrote:

> I have a set of KOSS SB 40's and they're great on the RX side but the
> cheap dynamic mic that comes as part of it sounds like @#*^%#@ on TX,
> regardless of how I've tried to compensate using the EQ
>
> Ken
>
>
>
>
>
> At 10:27 AM 5/26/2016, Dave Hachadorian wrote:
>
>> I forgot to mention that the SB-45 also has a nice padded headband.  It
>> doesn't irritate the top of my bald head as much as the rough webbing of
>> the CM500.  Judging from the pictures of the crowds at Dayton this year,
>> this could be a very significant feature for a lot of hams!
>>
>> Dave Hachadorian, K6LL
>> Yuma, AZ
>>
>>
>> -Original Message- From: Mike Harris
>> Sent: Thursday, May 26, 2016 7:14 AM
>> To: elecraft@mailman.qth.net
>> Subject: [Elecraft] Headset
>>
>> Hi,
>>
>> If I remember correctly the Koss SB45 headset has been offered as a
>> suitable substitute for the K3 weapon of choice the Yamaha CM500. Any
>> experience out there?
>>
>> My much used CM500 are starting to shed the leatherette covering and the
>> foam inside the cavities is wearing away. CM500 can be rather difficult
>> to source.
>>
>> Regards,
>>
>> Mike VP8NO
>> __
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>> Message delivered to k...@arcomcontrollers.com
>>
>
>
> --
> President and CTO - Arcom Communications
> Makers of repeater controllers and accessories.
> http://www.arcomcontrollers.com/
> Authorized Dealers for Kenwood and Telewave and
> we offer complete repeater packages!
> AH6LE/R - IRLP Node 3000
> http://www.irlp.net
> "We don't just make 'em. We use 'em!"
>
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Re: [Elecraft] OT - FCC Seeks "Noise Floor"

[Fred Jensen]

Well actually, not quite.  Incidental radiators are the noisemakers such 
a power lines arcing.  They radiate RF but have no need to.  They also 
do it across broad frequency ranges over several tens of MHz.


Unintentional radiators are computers, wall warts and SMPS, plasma TV's, 
and the like.  They generate RF internally for their operation, but do 
not intend to radiate it.  Alas, thanks to James Maxwell, they do.


Intentional radiators are those unlicensed devices that must radiate RF 
to function ... WiFi, Bluetooth, cell phones, etc.  They tend to be 
confined to certain bands [usually ISM bands like 2.4 GHz].  Many are 
spread-spectrum types of signals, and in a narrow receive BW just raise 
the noise floor a bit.


Some intentional radiators are in other than ISM bands.  443.93 MHz, 
familiar to most hams, is full of beeps, squawks, and other very short 
bursts.  They're remote reading thermometers, and other sensors.  Some 
RFID equipment operates on that and a few other frequencies which can be 
a problem for hams near ports, large rail yards, and intermodal yards. 
Pacific Gas and Electric remote-reading meters are said to be around 500 
MHz in a mesh network of some sort.


The TAC in the original link points out that quantitative data on the 
noise floor is sparse at best and very hard to obtain and analyze since 
it depends on so many factors in an almost infinite number of locations.


As to FCC enforcement or the lack of it, in the 50's the Commission was 
very active in enforcement ... especially if it affected commercial 
communications.  Today, the FCC is very much more a "Coordinator of 
Communications" than an enforcement agency.


I've concluded that, "It is what it is," and there aren't many ways to 
quantify noise floor for a finite amount of investment dollars.


73,

Fred K6DGW
- Northern California Contest Club
- CU in the Cal QSO Party 1-2 Oct 2016
- www.cqp.org

On 6/21/2016 10:39 AM, Barry LaZar wrote:

David,
This is interesting. But, how does it relate to the regulations
already on the books having to do with incidental radiation? That's the
regulation set that controls conducted and radiated noise from
powerlines, TV, computers, etc.

73,
Barry
K3NDM


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[Elecraft] OT: Drop by an Elmer's garage for a virtual chat

[Wayne Burdick]

Hi all,

My friend 4Z1UG (Eric), who created the QSO Today podcast, has added a "virtual 
Elmer's garage" feature, a.k.a. The QSO Today Community. He's already signed up 
a collection of very experienced hams to open up their "garages" for casual 
drop-bys. See:

   http://www.qsotodaycommunity.com/

Just like its brick 'n' mortar neighborhood counterpart, it's a friendly place 
where you can poke your head in, check out the station, and ask a question on 
any subject you like. It's totally low-key. 

No, you can't borrow a ladder. But you can certainly ask what the heck 
ladder-line is :)

Enjoy--

Wayne
N6KR




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Re: [Elecraft] Elecraft] RFI on K3s

[Jim Brown]

On Tue,6/21/2016 3:05 PM, riese-k3...@juno.com wrote:

its silver plated


Which, contrary to the hype from ripoff artists in the high futility 
world will try to tell you, offers NO performance benefit over POC 
(plain, ordinary copper) in even the most esoteric of audio systems.


There's a classic AES Paper from the '70s by E.E. Prof R. A. Greiner 
(now emeritus) who was at Univ of Wis at Madison showing conclusively 
that exotic loudspeaker cables are a complete waste of money, and the 
only thing that matters for real world loudspeakers is low DC 
resistance. In other words, short, fat copper.  The thing it affects is 
"damping factor" -- that is, the ability of the very low Z output stage 
to damp a floppy woofer. Damping factor is, by definition, the Z of the 
loudspeaker divided by the sum of the output Z of the amplifier plus the 
resistance of the cable, and it's low frequencies we're talking about, 
so it's DCR.
There's a classic AES Paper from the '70s by E.E. Prof R. A. Greiner 
(now emeritus) who was at Univ of Wis at Madison showing conclusively 
that exotic loudspeaker cables are a complete waste of money, and the 
only thing that matters for real world loudspeakers is low DC 
resistance. In other words, short, fat copper.  The thing it affects is 
"damping factor" -- that is, the ability of the very low Z output stage 
to damp a floppy woofer. Damping factor is, by definition, the Z of the 
loudspeaker divided by the sum of the output Z of the amplifier plus the 
resistance of the cable, and it's low frequencies we're talking about, 
so it's DCR.


There's a classic AES Paper from the '70s by E.E. Prof R. A. Greiner 
(now emeritus) who was at Univ of Wis at Madison showing conclusively 
that exotic loudspeaker cables are a complete waste of money, and the 
only thing that matters for real world loudspeakers is low DC 
resistance. In other words, short, fat copper.


The thing it affects is "damping factor" -- that is, the ability of the 
very low Z output stage to damp a floppy woofer. Damping factor is, by 
definition, the Z of the loudspeaker divided by the sum of the output Z 
of the amplifier plus the resistance of the cable, and it's low 
frequencies we're talking about, so it's DCR.


The laws of physics have not changed since the '70s. :)

73, Jim K9YC


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[Elecraft] K3-100 For Sale

[Palmer Byrne]

I am turning 83 this year and am down sizing my equipment and selling my 
beloved K3.  It is in excellent condition; only one non-smoking owner. 
Just back from Elecraft after complete checkup and alignment. Factory 
Repair Report included. Radio includes: 100 watt amplifier KAT3A 
Automatic antenna tuner, K144XV Internal 2M 10w module and K144RFLK 
K144XV Reference Lock Board. In addition to the standard 2.7khz 5 pole 
filter it includes: InRad 700 700Hz, 8 pole filter, KFL3A-1.8K-F 1.8kHz, 
8-pole filter KFL3A-6K 6khz AM/ESSB 8 pole filter, and the KFL3A-FM 
13khz AM/FM 8 pole filter. K3EXREF Ext. Frequency Reference Input, KXV3B 
RX Ant, 2nd Pre-Amp, IF Out and Xverter Interface upgrade, KSYN3A 
Synthesizer upgrade, Neogrip VFO A knob and Stainless Steel Kit. All 
updates performed. Factory calibrated to meet or exceed factory specs. 
Factory shipping container. $2595 shipped & insured CONUS. Prefer 
PayPal. 870-425-4257.


73
Palmer Byrne
 W7NMD
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[Elecraft] KX3 speaker

[Fred Moore]

Does anyone make an amplified speaker that closely matches the look and
size of the KX3 that sounds good.  Any recommendations..  thanks in
advance.. Fred


-- 
Fred Moore
email: f...@fmeco.com
   f...@safes.com
phone:  321-217-8699

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Re: [Elecraft] Elecraft] RFI on K3s

[riese-k3djc]

its silver plated 

Bob K3DJC
On Tue, 21 Jun 2016 16:43:44 -0500 Grant Youngman 
writes:
> I'm still wondering why anyone would BUY a bit of 10 ga twisted pair. 
> It blows the mind.
> 
> To each his own I suppose  but really?
> 
> On the other hand, I do know one or two hams who will stare at a 
> pair of RCA plugs and a bit of wire with a deer-in-the-headlights 
> look in their eyes and then drive to RS to buy a cable. 
> 
> smh ... 
> 
> Grant NQ5T
> 
> Sent from my iPhone
> 
> > On Jun 21, 2016, at 3:51 PM, w4sc  wrote:
> > 
> > Some one ask for this
> > 
> > On ePay:
> > 
> > 
>
http://www.ebay.com/itm/10-feet-10-AWG-Shielded-Twisted-Pair-Silver-Plate
d-Cable-speaker-wire-37-strands-/381493258989?hash=item58d2c52aed:g:2YEAA
OSwTapV4jU~
> > 
> > 
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> Message delivered to riese-k3...@juno.com
> 

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Re: [Elecraft] Elecraft] RFI on K3s

[Grant Youngman]

I'm still wondering why anyone would BUY a bit of 10 ga twisted pair. It blows 
the mind.

To each his own I suppose  but really?

On the other hand, I do know one or two hams who will stare at a pair of RCA 
plugs and a bit of wire with a deer-in-the-headlights look in their eyes and 
then drive to RS to buy a cable. 

smh ... 

Grant NQ5T

Sent from my iPhone

> On Jun 21, 2016, at 3:51 PM, w4sc  wrote:
> 
> Some one ask for this
> 
> On ePay:
> 
> http://www.ebay.com/itm/10-feet-10-AWG-Shielded-Twisted-Pair-Silver-Plated-Cable-speaker-wire-37-strands-/381493258989?hash=item58d2c52aed:g:2YEAAOSwTapV4jU~
> 
> 
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Re: [Elecraft] OT - FCC Seeks "Noise Floor"

[Bill]

And the FCC will enforce anything?

Bill W2BLC K-Line

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Re: [Elecraft] KXPA100- How impactful to making contacts?

[Jim Brown]

Yes. Rick's study, using HFTA, takes terrain into account. I've done a 
similar study using NEC, which assumes "flatland," and produces similar 
results. BUT -- what HFTA tells you is unique to whatever terrain data 
you give it. What Rick is describing is good for HIS QTH, but may not be 
good for yours.


Here's are links to my study.  The first is text format, the second are 
slides for talks I've given at Pacificon and to several ham clubs.


http://k9yc.com/AntennaPlanning.pdf
http://k9yc.com/VertOrHorizontal-Slides.pdf

One thing that HFTA will tell you (correctly) is that if you're on a 
hilltop, you don't need as much height as you would on "flatland."  My 
dipoles for 80 and 40M (two fans at right angles to each other) are at 
140 ft, and they really play well. Likewise, a pair for 30M at 100 ft 
work great.


73, Jim K9YC

On Tue,6/21/2016 1:32 PM, Rick WA6NHC wrote:
Based on that review, with as little as 1/4 wavelength above dirt, 
good things start to happen beyond NVIS (straight up) activity, the 
takeoff angle falls.  At ~3/8 wave, the radiation angle of a dipole 
comes down remarkably, almost to the magic 2 deg level (best chance of 
DX or longer openings).  At about a half wave up, the advantage is 
less for the extra height (less return on the 'investment'), 
improvements came slower per altitude change.  The same can be said of 
beams but with the added gain (Yagi, enhanced dipoles).  At another 
point, the advantages start to reverse too.  It was an interesting study. 



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Re: [Elecraft] Elecraft] RFI on K3s

[w4sc]

Some one ask for this

On ePay:

http://www.ebay.com/itm/10-feet-10-AWG-Shielded-Twisted-Pair-Silver-Plated-Cable-speaker-wire-37-strands-/381493258989?hash=item58d2c52aed:g:2YEAAOSwTapV4jU~

de Ben W4SC
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Re: [Elecraft] KXPA100- How impactful to making contacts?

[Rick WA6NHC]

With some recent serious study lately for FD planning, including an HFTA 
study based on the actual site used (yeah a serious contester took the 
time), you may also discover that 'common' thinking isn't always correct 
about dipoles over dirt.


Based on that review, with as little as 1/4 wavelength above dirt, good 
things start to happen beyond NVIS (straight up) activity, the takeoff 
angle falls.  At ~3/8 wave, the radiation angle of a dipole comes down 
remarkably, almost to the magic 2 deg level (best chance of DX or longer 
openings).  At about a half wave up, the advantage is less for the extra 
height (less return on the 'investment'), improvements came slower per 
altitude change.  The same can be said of beams but with the added gain 
(Yagi, enhanced dipoles).  At another point, the advantages start to 
reverse too.  It was an interesting study.


If you can get the height and afford the line losses in QRP, great.  But 
if you can't, get the dipole at least 3/8 wavelengths above dirt.


You might consider the JT modes.  While extremely s_l__o___w they do 
very well with minimal received signals (note I didn't say low transmit 
power).  I just can't bear the 15 Q/hour maximum rate (5 minutes to 
complete one exchange).  ;-)


73,

Rick nhc


On 6/21/2016 12:38 PM, Vic Rosenthal wrote:

A dipole-type antenna should be at least 1/2 wavelength high for decent DX 
performance and preferably a full wavelength. An inverted V is not as good as a 
dipole. And the high bands are poor now in the summer and as the sunspot cycle 
declines. So that's one strike against you. You are running low power. Strike 
two. And you are trying to use SSB. You're out.
If you don't like CW, I would suggest PSK, which seems to get out well with low 
power. If you really want voice and DX then you should consider both raising 
your antenna and increasing power.

Vic 4X6GP


On 21 Jun 2016, at 21:31, Eballina  wrote:

I am feeding it with about 80 ft of coax. Barry I would never dream of asking for the 
"secret recipe"!😜

Sent from my iPhone


On Jun 21, 2016, at 2:28 PM, Barry LaZar  wrote:

SSB at QRP levels can be a bit challenging. I do have a KXPA100 and use it. 
However, I only run QRP seriously for Field Day with a group who are doing the 
same with KX3s. We do very well at 5 Watts, but we do have a few acres of 
antennas. I have found two things that make a very big difference, antenna 
height and minimizing antenna system loses.

You say you are running a fan dipole. You don't say what you are feeding it 
with or how long your feed line is. I have a dipole up 40 feet and feed it with 
open wire to a good 4:1 current balun where I transition to LMR-400 to come 
into the house. You may not need a 4:1 balun for a fan dipole, but a good 1:1 
balun. And, this is only needed if you have a fairly long run or want to 
extract the very last milliwatt out of your system. I would tell you what we do 
for Field Day, the extremes we take, but that would give away our competitive 
secret. ;-)

73,
Barry
K3NDM



-- Original Message --
From: "Eballina" 
To: "Barry LaZar" 
Cc: Elecraft@mailman.qth.net
Sent: 6/21/2016 2:12:55 PM
Subject: Re: [Elecraft] KXPA100- How impactful to making contacts?


Thanks Barry, up about 30 feetr al top of
of inverted V.  Ends of antenna up about 25 ft. SSB phone preferred but did 
pick up PSK31 Signalink but prefer voice.
Sent from my iPhone


On Jun 21, 2016, at 1:54 PM, Barry LaZar  wrote:

You don't say how high your antenna is or what modes you are using. However, If 
you aren't already there, I would get my antenna up at least about 35 feet, 60 
feet would surely be better. At QRP power levels, I would focus on CW or PSK31, 
or one of the other weak signal modes. The exception is 10 or 15 meters where 
anything that can be radiated seems to work. The problem is 10 and 15 aren't 
open all the time meaning you are going to need to do a lot of listening on 
these bands if you want to be successful. There is a trick you might want to 
employ, using the beacons that are there and knowing their schedule. Just leave 
your receiver on on one of them, and when you hear it, you know the band is 
open to that part of the world.

73,
Barry
K3NDM

-- Original Message --
From: "Road Runner" 
To: Elecraft@mailman.qth.net
Sent: 6/21/2016 1:08:06 PM
Subject: [Elecraft] KXPA100- How impactful to making contacts?


Have had my KX3 for a couple of weeks and love it. Biggest issue I have is even 
at 15 watts, unless conditions are right, I am having issues making DX 
contacts. The KX3 is connected to an Alpha Delta 80-6 meter fan dipole. I have 
been thinking about getting the KXPA 100 but wonder whether it will be enough 
of a bang for the buck. I use this at a summer cottage, at home I started with 
a Kenwood Ts-590SG and eventually upgraded the rig with an Ameritron 811H to 
get more punch. I have no problems getting picked out of pileup so now...
So my question is for those of you that have gone 

Re: [Elecraft] Headset

[Ken Arck]

I have a set of KOSS SB 40's and they're great on the RX side but the 
cheap dynamic mic that comes as part of it sounds like @#*^%#@ on TX, 
regardless of how I've tried to compensate using the EQ


Ken





At 10:27 AM 5/26/2016, Dave Hachadorian wrote:
I forgot to mention that the SB-45 also has a nice padded 
headband.  It doesn't irritate the top of my bald head as much as 
the rough webbing of the CM500.  Judging from the pictures of the 
crowds at Dayton this year,  this could be a very significant 
feature for a lot of hams!


Dave Hachadorian, K6LL
Yuma, AZ


-Original Message- From: Mike Harris
Sent: Thursday, May 26, 2016 7:14 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Headset

Hi,

If I remember correctly the Koss SB45 headset has been offered as a
suitable substitute for the K3 weapon of choice the Yamaha CM500. Any
experience out there?

My much used CM500 are starting to shed the leatherette covering and the
foam inside the cavities is wearing away. CM500 can be rather difficult
to source.

Regards,

Mike VP8NO
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--
President and CTO - Arcom Communications
Makers of repeater controllers and accessories.
http://www.arcomcontrollers.com/
Authorized Dealers for Kenwood and Telewave and
we offer complete repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net
"We don't just make 'em. We use 'em!"

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Re: [Elecraft] KXPA100- How impactful to making contacts?

[Vic Rosenthal]

A dipole-type antenna should be at least 1/2 wavelength high for decent DX 
performance and preferably a full wavelength. An inverted V is not as good as a 
dipole. And the high bands are poor now in the summer and as the sunspot cycle 
declines. So that's one strike against you. You are running low power. Strike 
two. And you are trying to use SSB. You're out.
If you don't like CW, I would suggest PSK, which seems to get out well with low 
power. If you really want voice and DX then you should consider both raising 
your antenna and increasing power.

Vic 4X6GP

> On 21 Jun 2016, at 21:31, Eballina  wrote:
> 
> I am feeding it with about 80 ft of coax. Barry I would never dream of asking 
> for the "secret recipe"!😜
> 
> Sent from my iPhone
> 
>> On Jun 21, 2016, at 2:28 PM, Barry LaZar  wrote:
>> 
>> SSB at QRP levels can be a bit challenging. I do have a KXPA100 and use it. 
>> However, I only run QRP seriously for Field Day with a group who are doing 
>> the same with KX3s. We do very well at 5 Watts, but we do have a few acres 
>> of antennas. I have found two things that make a very big difference, 
>> antenna height and minimizing antenna system loses.
>> 
>> You say you are running a fan dipole. You don't say what you are feeding it 
>> with or how long your feed line is. I have a dipole up 40 feet and feed it 
>> with open wire to a good 4:1 current balun where I transition to LMR-400 to 
>> come into the house. You may not need a 4:1 balun for a fan dipole, but a 
>> good 1:1 balun. And, this is only needed if you have a fairly long run or 
>> want to extract the very last milliwatt out of your system. I would tell you 
>> what we do for Field Day, the extremes we take, but that would give away our 
>> competitive secret. ;-)
>> 
>> 73,
>> Barry
>> K3NDM
>> 
>> 
>> 
>> -- Original Message --
>> From: "Eballina" 
>> To: "Barry LaZar" 
>> Cc: Elecraft@mailman.qth.net
>> Sent: 6/21/2016 2:12:55 PM
>> Subject: Re: [Elecraft] KXPA100- How impactful to making contacts?
>> 
>>> Thanks Barry, up about 30 feetr al top of
>>> of inverted V.  Ends of antenna up about 25 ft. SSB phone preferred but did 
>>> pick up PSK31 Signalink but prefer voice.
>>> Sent from my iPhone
>>> 
 On Jun 21, 2016, at 1:54 PM, Barry LaZar  wrote:
 
 You don't say how high your antenna is or what modes you are using. 
 However, If you aren't already there, I would get my antenna up at least 
 about 35 feet, 60 feet would surely be better. At QRP power levels, I 
 would focus on CW or PSK31, or one of the other weak signal modes. The 
 exception is 10 or 15 meters where anything that can be radiated seems to 
 work. The problem is 10 and 15 aren't open all the time meaning you are 
 going to need to do a lot of listening on these bands if you want to be 
 successful. There is a trick you might want to employ, using the beacons 
 that are there and knowing their schedule. Just leave your receiver on on 
 one of them, and when you hear it, you know the band is open to that part 
 of the world.
 
 73,
 Barry
 K3NDM
 
 -- Original Message --
 From: "Road Runner" 
 To: Elecraft@mailman.qth.net
 Sent: 6/21/2016 1:08:06 PM
 Subject: [Elecraft] KXPA100- How impactful to making contacts?
 
> Have had my KX3 for a couple of weeks and love it. Biggest issue I have 
> is even at 15 watts, unless conditions are right, I am having issues 
> making DX contacts. The KX3 is connected to an Alpha Delta 80-6 meter fan 
> dipole. I have been thinking about getting the KXPA 100 but wonder 
> whether it will be enough of a bang for the buck. I use this at a summer 
> cottage, at home I started with a Kenwood Ts-590SG and eventually 
> upgraded the rig with an Ameritron 811H to get more punch. I have no 
> problems getting picked out of pileup so now...
> So my question is for those of you that have gone the upgrade path to 
> KXPA100... Did you get enough punch or are you wishing you had gone with 
> more power? I am not really too crazy about going all the way to the 
> KPA500...
> 
> Sent from my iPad
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Re: [Elecraft] KXPA100- How impactful to making contacts?

[Phil Wheeler]

Nor would I :-)

Phil W7OX

On 6/21/16 11:31 AM, Eballina wrote:

I am feeding it with about 80 ft of coax. Barry I would never dream of asking for the 
"secret recipe"!😜

Sent from my iPhone


On Jun 21, 2016, at 2:28 PM, Barry LaZar  wrote:

SSB at QRP levels can be a bit challenging. I do have a KXPA100 and use it. 
However, I only run QRP seriously for Field Day with a group who are doing the 
same with KX3s. We do very well at 5 Watts, but we do have a few acres of 
antennas. I have found two things that make a very big difference, antenna 
height and minimizing antenna system loses.

You say you are running a fan dipole. You don't say what you are feeding it 
with or how long your feed line is. I have a dipole up 40 feet and feed it with 
open wire to a good 4:1 current balun where I transition to LMR-400 to come 
into the house. You may not need a 4:1 balun for a fan dipole, but a good 1:1 
balun. And, this is only needed if you have a fairly long run or want to 
extract the very last milliwatt out of your system. I would tell you what we do 
for Field Day, the extremes we take, but that would give away our competitive 
secret. ;-)

73,
Barry
K3NDM


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Re: [Elecraft] Twisted Pair Cables for DC Power

[Clay Autery]

Should offer as an non-standard option... putting UTP/STP power cables
in the standard pack would result in a non-trivial materials cost increase.

__
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389

On 6/21/2016 2:04 PM, Walter Underwood wrote:
> It would be lovely if manufacturers started supplying this sort of cable with 
> their radios.
>
> Hint, hint.
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
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[Elecraft] RFI on K3s

['DGB']

Tnx to all the input ... all my pwr leads in the shack are now twisted 
(as is my mind) ... never had RFI to begin with!


tnx 73 Dwight NS9I

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Re: [Elecraft] Twisted Pair Cables for DC Power

[Walter Underwood]

It would be lovely if manufacturers started supplying this sort of cable with 
their radios.

Hint, hint.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Jun 21, 2016, at 11:31 AM, Jim Brown  wrote:
> 
> On Tue,6/21/2016 10:56 AM, Clay Autery wrote:
>> Belen appears to make a 10 AWG twisted pair cable, but I only see it 
>> available in 500 foot spools. Search for "Belden 8678”.
> 
> This is NOT a single twisted pair, it is 6 pairs of #22. It is CONTROL cable, 
> not power cable.
> 
> Belden does make #10-2 jacketed stranded twisted pair cables. The least 
> exotic is 5T00UP. It is sold in 500 ft and 1,000 ft lengths.
> 
> Belden 8477 is #12-2, jacketed stranded twisted pair.
> 
> West Penn C210, 25210, and HA210 are #10-2 jacketed stranded twisted pair 
> cables. The difference between them is the fire rating of their insulation 
> and jacket materials. West Penn C208 is #8-2 jacket stranded twisted pair. 
> They are designed for loudspeaker wiring in large permanently installed sound 
> systems. Part of what you're paying for in these cables is that fire rating.
> 
> 73, Jim K9YC
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[Elecraft] Twisted Pair Cables for DC Power

[Jim Brown]

On Tue,6/21/2016 10:56 AM, Clay Autery wrote:

Belen appears to make a 10 AWG twisted pair cable, but I only see it available in 
500 foot spools. Search for "Belden 8678”.


This is NOT a single twisted pair, it is 6 pairs of #22. It is CONTROL 
cable, not power cable.


Belden does make #10-2 jacketed stranded twisted pair cables. The least 
exotic is 5T00UP. It is sold in 500 ft and 1,000 ft lengths.


Belden 8477 is #12-2, jacketed stranded twisted pair.

West Penn C210, 25210, and HA210 are #10-2 jacketed stranded twisted 
pair cables. The difference between them is the fire rating of their 
insulation and jacket materials. West Penn C208 is #8-2 jacket stranded 
twisted pair. They are designed for loudspeaker wiring in large 
permanently installed sound systems. Part of what you're paying for in 
these cables is that fire rating.


73, Jim K9YC
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Re: [Elecraft] KXPA100- How impactful to making contacts?

[Eballina]

I am feeding it with about 80 ft of coax. Barry I would never dream of asking 
for the "secret recipe"!😜

Sent from my iPhone

> On Jun 21, 2016, at 2:28 PM, Barry LaZar  wrote:
> 
> SSB at QRP levels can be a bit challenging. I do have a KXPA100 and use it. 
> However, I only run QRP seriously for Field Day with a group who are doing 
> the same with KX3s. We do very well at 5 Watts, but we do have a few acres of 
> antennas. I have found two things that make a very big difference, antenna 
> height and minimizing antenna system loses.
> 
> You say you are running a fan dipole. You don't say what you are feeding it 
> with or how long your feed line is. I have a dipole up 40 feet and feed it 
> with open wire to a good 4:1 current balun where I transition to LMR-400 to 
> come into the house. You may not need a 4:1 balun for a fan dipole, but a 
> good 1:1 balun. And, this is only needed if you have a fairly long run or 
> want to extract the very last milliwatt out of your system. I would tell you 
> what we do for Field Day, the extremes we take, but that would give away our 
> competitive secret. ;-)
> 
> 73,
> Barry
> K3NDM
> 
> 
> 
> -- Original Message --
> From: "Eballina" 
> To: "Barry LaZar" 
> Cc: Elecraft@mailman.qth.net
> Sent: 6/21/2016 2:12:55 PM
> Subject: Re: [Elecraft] KXPA100- How impactful to making contacts?
> 
>> Thanks Barry, up about 30 feetr al top of
>> of inverted V.  Ends of antenna up about 25 ft. SSB phone preferred but did 
>> pick up PSK31 Signalink but prefer voice.
>> Sent from my iPhone
>> 
>>> On Jun 21, 2016, at 1:54 PM, Barry LaZar  wrote:
>>> 
>>> You don't say how high your antenna is or what modes you are using. 
>>> However, If you aren't already there, I would get my antenna up at least 
>>> about 35 feet, 60 feet would surely be better. At QRP power levels, I would 
>>> focus on CW or PSK31, or one of the other weak signal modes. The exception 
>>> is 10 or 15 meters where anything that can be radiated seems to work. The 
>>> problem is 10 and 15 aren't open all the time meaning you are going to need 
>>> to do a lot of listening on these bands if you want to be successful. There 
>>> is a trick you might want to employ, using the beacons that are there and 
>>> knowing their schedule. Just leave your receiver on on one of them, and 
>>> when you hear it, you know the band is open to that part of the world.
>>> 
>>> 73,
>>> Barry
>>> K3NDM
>>> 
>>> -- Original Message --
>>> From: "Road Runner" 
>>> To: Elecraft@mailman.qth.net
>>> Sent: 6/21/2016 1:08:06 PM
>>> Subject: [Elecraft] KXPA100- How impactful to making contacts?
>>> 
 Have had my KX3 for a couple of weeks and love it. Biggest issue I have is 
 even at 15 watts, unless conditions are right, I am having issues making 
 DX contacts. The KX3 is connected to an Alpha Delta 80-6 meter fan dipole. 
 I have been thinking about getting the KXPA 100 but wonder whether it will 
 be enough of a bang for the buck. I use this at a summer cottage, at home 
 I started with a Kenwood Ts-590SG and eventually upgraded the rig with an 
 Ameritron 811H to get more punch. I have no problems getting picked out of 
 pileup so now...
 So my question is for those of you that have gone the upgrade path to 
 KXPA100... Did you get enough punch or are you wishing you had gone with 
 more power? I am not really too crazy about going all the way to the 
 KPA500...
 
 Sent from my iPad
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> 

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Re: [Elecraft] KXPA100- How impactful to making contacts?

[Barry LaZar]

SSB at QRP levels can be a bit challenging. I do have a KXPA100 and use 
it. However, I only run QRP seriously for Field Day with a group who are 
doing the same with KX3s. We do very well at 5 Watts, but we do have a 
few acres of antennas. I have found two things that make a very big 
difference, antenna height and minimizing antenna system loses.


You say you are running a fan dipole. You don't say what you are feeding 
it with or how long your feed line is. I have a dipole up 40 feet and 
feed it with open wire to a good 4:1 current balun where I transition to 
LMR-400 to come into the house. You may not need a 4:1 balun for a fan 
dipole, but a good 1:1 balun. And, this is only needed if you have a 
fairly long run or want to extract the very last milliwatt out of your 
system. I would tell you what we do for Field Day, the extremes we take, 
but that would give away our competitive secret. ;-)


73,
Barry
K3NDM



-- Original Message --
From: "Eballina" 
To: "Barry LaZar" 
Cc: Elecraft@mailman.qth.net
Sent: 6/21/2016 2:12:55 PM
Subject: Re: [Elecraft] KXPA100- How impactful to making contacts?


Thanks Barry, up about 30 feetr al top of
of inverted V.  Ends of antenna up about 25 ft. SSB phone preferred but 
did pick up PSK31 Signalink but prefer voice.

Sent from my iPhone


 On Jun 21, 2016, at 1:54 PM, Barry LaZar  wrote:

 You don't say how high your antenna is or what modes you are using. 
However, If you aren't already there, I would get my antenna up at 
least about 35 feet, 60 feet would surely be better. At QRP power 
levels, I would focus on CW or PSK31, or one of the other weak signal 
modes. The exception is 10 or 15 meters where anything that can be 
radiated seems to work. The problem is 10 and 15 aren't open all the 
time meaning you are going to need to do a lot of listening on these 
bands if you want to be successful. There is a trick you might want to 
employ, using the beacons that are there and knowing their schedule. 
Just leave your receiver on on one of them, and when you hear it, you 
know the band is open to that part of the world.


 73,
 Barry
 K3NDM

 -- Original Message --
 From: "Road Runner" 
 To: Elecraft@mailman.qth.net
 Sent: 6/21/2016 1:08:06 PM
 Subject: [Elecraft] KXPA100- How impactful to making contacts?

 Have had my KX3 for a couple of weeks and love it. Biggest issue I 
have is even at 15 watts, unless conditions are right, I am having 
issues making DX contacts. The KX3 is connected to an Alpha Delta 
80-6 meter fan dipole. I have been thinking about getting the KXPA 
100 but wonder whether it will be enough of a bang for the buck. I 
use this at a summer cottage, at home I started with a Kenwood 
Ts-590SG and eventually upgraded the rig with an Ameritron 811H to 
get more punch. I have no problems getting picked out of pileup so 
now...
 So my question is for those of you that have gone the upgrade path 
to KXPA100... Did you get enough punch or are you wishing you had 
gone with more power? I am not really too crazy about going all the 
way to the KPA500...


 Sent from my iPad
 __
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Re: [Elecraft] KXPA100- How impactful to making contacts?

[Eballina]

Thanks Barry, up about 30 feetr al top of 
of inverted V.  Ends of antenna up about 25 ft. SSB phone preferred but did 
pick up PSK31 Signalink but prefer voice.
Sent from my iPhone

> On Jun 21, 2016, at 1:54 PM, Barry LaZar  wrote:
> 
> You don't say how high your antenna is or what modes you are using. However, 
> If you aren't already there, I would get my antenna up at least about 35 
> feet, 60 feet would surely be better. At QRP power levels, I would focus on 
> CW or PSK31, or one of the other weak signal modes. The exception is 10 or 15 
> meters where anything that can be radiated seems to work. The problem is 10 
> and 15 aren't open all the time meaning you are going to need to do a lot of 
> listening on these bands if you want to be successful. There is a trick you 
> might want to employ, using the beacons that are there and knowing their 
> schedule. Just leave your receiver on on one of them, and when you hear it, 
> you know the band is open to that part of the world.
> 
> 73,
> Barry
> K3NDM
> 
> -- Original Message --
> From: "Road Runner" 
> To: Elecraft@mailman.qth.net
> Sent: 6/21/2016 1:08:06 PM
> Subject: [Elecraft] KXPA100- How impactful to making contacts?
> 
>> Have had my KX3 for a couple of weeks and love it. Biggest issue I have is 
>> even at 15 watts, unless conditions are right, I am having issues making DX 
>> contacts. The KX3 is connected to an Alpha Delta 80-6 meter fan dipole. I 
>> have been thinking about getting the KXPA 100 but wonder whether it will be 
>> enough of a bang for the buck. I use this at a summer cottage, at home I 
>> started with a Kenwood Ts-590SG and eventually upgraded the rig with an 
>> Ameritron 811H to get more punch. I have no problems getting picked out of 
>> pileup so now...
>> So my question is for those of you that have gone the upgrade path to 
>> KXPA100... Did you get enough punch or are you wishing you had gone with 
>> more power? I am not really too crazy about going all the way to the 
>> KPA500...
>> 
>> Sent from my iPad
>> __
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Re: [Elecraft] K2 - additional filters

[Richard Newstead]

Hi Gerald

The filters improve the skirt selectivity performance of the stock
radio. Several people seem to have used them in their K2 radios.

Details of the various filter modules are here:

http://www.sotabeams.co.uk/digital-audio-filter-modules/

73 Richard G3CWI


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[Elecraft] KPA100 module

[Roger D Johnson]

I'm installing the "gold plated" connector mod and I noticed that my
PA module has a 2700 ufd cap mounted on the heat sink side of the
board between the +12 volt input and ground pins of P68B.

This cap isn't on the latest schematic (Jun 2010) and I don't see it
on any pics of the PA module! I think my module is Rev B.

73, Roger

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Re: [Elecraft] OT KX2/KX3 Logging Program Q

[Mike Dodd]

On 6/21/2016 1:39 PM, Jim GM wrote:

N1MM is a nice program but I need a second com port and an interface
to send CW. RumLog on the Mac only needs one.


N1MM is a contest logger, so I assume you need to send CW in contests, 
not general QSOs.



So here is the Question. Since the Micorsoft Surface Tablet has only
one comport what Logging progam would fit my requirements?


I use a WinKeyer USB keyer to send CW with a paddle and with N2MM+.

N1MM+ controls the WinKeyer perfectly though a USB port, and has a 
separate configuration tab devoted to it.


With my KX3/KXP3/KXPA100, I used one USB port for everything except 
sending CW, which used a second USB port. I did not use an RS-232 serial 
port for anything.


The same arrangement works with my new K3s and the same WinKeyer.

I'm not familiar with the Surface. If it has only one USB port, you can 
use a powered USB hub to get more connections.


hope this helps.

--
73, Mike N4CF
Louisa County, VA USA
Elecraft K3s/100
Carolina Windom up 45'
http://n4cf.mdodd.com
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Re: [Elecraft] Elecraft] RFI on K3s

[Clay Autery]

I'd likely be interested in about 100 feet.  Have to study the specs
more, but Anixster's part is half the cost of the others...

__
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389

On 6/21/2016 9:48 AM, Walter Underwood wrote:
> Belen appears to make a 10 AWG twisted pair cable, but I only see it 
> available in 500 foot spools. Search for "Belden 8678”.
>
> https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-Pair-Multi-Conductor-Cable/p/B5T00UP-500
>  
> 
> http://www.alliedelec.com/belden-8678-060500/70004200/ 
> 
> http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-060500/?qs=GjJS1gozy%2FMvzJLBfKAfoA%3D%3D
>  
> 
>
> Might be worth organizing a group or club purchase. Or maybe PowerWerx could 
> carry it.
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
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Re: [Elecraft] KXPA100- How impactful to making contacts?

[Barry LaZar]

You don't say how high your antenna is or what modes you are using. 
However, If you aren't already there, I would get my antenna up at least 
about 35 feet, 60 feet would surely be better. At QRP power levels, I 
would focus on CW or PSK31, or one of the other weak signal modes. The 
exception is 10 or 15 meters where anything that can be radiated seems 
to work. The problem is 10 and 15 aren't open all the time meaning you 
are going to need to do a lot of listening on these bands if you want to 
be successful. There is a trick you might want to employ, using the 
beacons that are there and knowing their schedule. Just leave your 
receiver on on one of them, and when you hear it, you know the band is 
open to that part of the world.


73,
Barry
K3NDM

-- Original Message --
From: "Road Runner" 
To: Elecraft@mailman.qth.net
Sent: 6/21/2016 1:08:06 PM
Subject: [Elecraft] KXPA100- How impactful to making contacts?

Have had my KX3 for a couple of weeks and love it. Biggest issue I have 
is even at 15 watts, unless conditions are right, I am having issues 
making DX contacts. The KX3 is connected to an Alpha Delta 80-6 meter 
fan dipole. I have been thinking about getting the KXPA 100 but wonder 
whether it will be enough of a bang for the buck. I use this at a 
summer cottage, at home I started with a Kenwood Ts-590SG and 
eventually upgraded the rig with an Ameritron 811H to get more punch. I 
have no problems getting picked out of pileup so now...
So my question is for those of you that have gone the upgrade path to 
KXPA100... Did you get enough punch or are you wishing you had gone 
with more power? I am not really too crazy about going all the way to 
the KPA500...


Sent from my iPad
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Re: [Elecraft] KXPA100- How impactful to making contacts?

[Mike Dodd]

On 6/21/2016 1:08 PM, Road Runner wrote:

Have had my KX3 for a couple of weeks and love it. Biggest issue I
have is even at 15 watts, unless conditions are right, I am having
issues making DX contacts.


CW or SSB? The mode makes a huge difference.


So my question is for those of you that have gone the upgrade
path to KXPA100... Did you get enough punch or are you wishing you
had gone with more power? I am not really too crazy about going all
the way to the KPA500...


With a KX3, and now a K3s, both feeding a Carolina Windom, I have good 
results working DX with only 5W CW on all bands. I just looked at the 
contests page on my website, and see that I averaged 23 QSOs per hour 
over two years operating the ARRL DX Contest at 5W.


100W does make a big difference on CW. In the year between those two 
ARRL DX contests, I ran 100W CW and averaged 33 Qs/hour -- a 43% better 
rate.


Now, I am not an uber contester, and I have only the Carolina Windom 
antenna up about 45'. No beams and no 100'-high antennas.


I found 10W SSB to be difficult and frustrating, both in contests and 
normal QSOs. OTOH, I _did_ work New Zealand with 10W SSB, and we tested 
to see how low I could go. He was able to copy me down to 1W.


I experienced difficulties with 10W SSB on a 75M morning net. People 
just couldn't pull me out of the noise.


Once I bought the KXPA100, SSB operating was much more enjoyable. I 
often can get a DX station to answer me in a pileup after three to six 
calls (good timing helps a lot).


So, my bottom line: 100W yields noticeable benefits on CW and SSB, but 
_especially_ on SSB.


I was never sorry I bought the KXPA100.

--
73, Mike N4CF
Louisa County, VA USA
Elecraft K3s/100
Carolina Windom up 45'
http://n4cf.mdodd.com
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[Elecraft] OT KX2/KX3 Logging Program Q

[Jim GM]

HI Elecrafters

I have a confession, I have been Running RumLog with my KX3 for several years 
with my Mac Mini Apple computer and love it.  I just got a Microsoft Surface 3. 
I want to run a logging program that interfaces with the KX2 and KX3 using one 
USB com port.

N1MM is a nice program but I need a second com port and an interface to send 
CW. RumLog on the Mac only needs one.

So here is the Question.
Since the Micorsoft Surface Tablet has only one comport what Logging progam 
would fit my requirements?

Sure I could get an adaptor port so I can have more ports  and add an interface 
but that is not an option for my needs.

Jim K9TF

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Re: [Elecraft] OT - FCC Seeks "Noise Floor"

[Barry LaZar]

David,
This is interesting. But, how does it relate to the regulations 
already on the books having to do with incidental radiation? That's the 
regulation set that controls conducted and radiated noise from 
powerlines, TV, computers, etc.


73,
Barry
K3NDM

-- Original Message --
From: "David Ahrendts" 
To: "elecraft@mailman.qth.net" 
Sent: 6/21/2016 12:11:33 PM
Subject: [Elecraft] OT - FCC Seeks "Noise Floor"

From the commercial side of broadcasting, but can’t we relate:  
http://www.tvtechnology.com/news/0002/eh-fcc-seeks-noise-floor/278840 

Maybe someone knows if the ARRL is commenting on behalf of the amateur 
radio community.


David A., KK6DA, Los Angeles



David Ahrendts davidahren...@me.com




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Re: [Elecraft] K2 - additional filters

[Gerald Manthey]

What does that do? 


> On Jun 21, 2016, at 12:17 PM, Richard Newstead  
> wrote:
> 
> Nicolas F4EGX has done a nice blog entry showing how he has installed
> our LASERBEAM digital filter module in his K2.
> 
> http://f4egx.blogspot.fr/2016/06/laserbeamfilter-from-sotabeams-to-my-k2.html
> 
> 73 Richard G3CWI
> 
>
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Re: [Elecraft] k3 various & intermittent errors on power on

[Bill Steffey NY9H]

the usual splendid treatment by howard confirmed my thought ...
get those gold contacts installedtnx
bill

At 12:21 AM 6/20/2016, Eric Swartz - WA6HHQ, Elecraft wrote:

Bill,

Call our support guys first thing Monday.

73,

Eric
elecraft.com
_..._



> On Jun 19, 2016, at 6:14 AM, Bill Steffey NY9H  wrote:
>
> k3  sn 22xx loaded option wise  ( no 2mtr)
>
> last week  vfo did not move receiver ??...
> and heard no sigs  till after i changed bands and back///
>
> upon pwr on   get err codes..
> first  was  KIO
>
> THEN  IF1
>
> PWR DN AND UP AGAIN ,,,
>
> KIO
> IF1
>
> I RELOADED FW THINKING THAT WOULD BE EASIEST ..
> then got the  kio error again/.///
>
> RADIO WORKS FINE
>
> sounds like i need to take it apart and deoxit  everything  front 
panel  and

> reassemble.
> other ideas 
>
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[Elecraft] K2 - additional filters

[Richard Newstead]

Nicolas F4EGX has done a nice blog entry showing how he has installed
our LASERBEAM digital filter module in his K2.

http://f4egx.blogspot.fr/2016/06/laserbeamfilter-from-sotabeams-to-my-k2.html

73 Richard G3CWI


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[Elecraft] KXPA100- How impactful to making contacts?

[Road Runner]

Have had my KX3 for a couple of weeks and love it. Biggest issue I have is even 
at 15 watts, unless conditions are right, I am having issues making DX 
contacts. The KX3 is connected to an Alpha Delta 80-6 meter fan dipole. I have 
been thinking about getting the KXPA 100 but wonder whether it will be enough 
of a bang for the buck. I use this at a summer cottage, at home I started with 
a Kenwood Ts-590SG and eventually upgraded the rig with an Ameritron 811H to 
get more punch. I have no problems getting picked out of pileup so now...
So my question is for those of you that have gone the upgrade path to 
KXPA100... Did you get enough punch or are you wishing you had gone with more 
power? I am not really too crazy about going all the way to the KPA500...

Sent from my iPad
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Re: [Elecraft] RFI on K3s

[David Ahrendts]

Dwight, here’s one example of a shield twisted pair: Belden 12/2 5000FE:  
http://www.showmecables.com/product/Belden-2-Conductor-12-Awg-Stranded-Shielded-Cable-Per-FT.aspx
 

Twisted pair. Foil shielded. Ground.  I looked at this and found a cheaper, 
non-plenum version from another brand (will get you the exact name in a 
separate post). 
So I’ve replaced all zip cable lines and many of the smaller Elecraft lines 
too. Trashed the noisy Samsung switching PS (14V DC) used for the Elecraft SVGA 
display and made a new shielded cable to the Powererx PS and on and on.
Highly effective method to reduce RFI. Pretty convinced noise is not going to 
enter the system through these shielded cables.

David A., KK6DA, Los Angeles 


> On Jun 21, 2016, at 6:44 AM, Amateur Radio Operator N5GE  
> wrote:
> 
> Works great!
> 
> Do it all the time.  Father showed me how 50 years ago, the same way
> Vic describes it ;o)
> 
> On Tue, 21 Jun 2016 07:44:19 +0300, you wrote:
> 
>> Get some no. 10 stranded wire at Home Depot (etc.), double it over, put one 
>> end in a vise and the other in the chuck of your electric drill and twist 
>> away. Not shielded, but much better than parallel wires. I suppose you could 
>> strip some RG-8 if you really wanted to shield it.
>> 
>> Vic 4X6GP
>> 
>>> On 20 Jun 2016, at 22:54, DGB  wrote:
>>> 
>>> 
>>> Jim ... where does one find #10 twisted pair? Is it shielded?
>>> 
>>> thanks 73 Dwight NS9I
>>> 
 On 6/20/2016 12:59 PM, Jim Brown wrote:
> On Mon,6/20/2016 10:33 AM, James Walker wrote:
> Is it normal to register voltage as low as I’m seeing on my K-3?
 
 What you're seeing sounds like IR drop in the DC cable. How long is the DC 
 cable between the K3 and the power supply? What wire gauge? Is there any 
 equipment (like distribution panel) in between?
 
 This is a great application for a short length of #10 twisted pair between 
 the PSU and rig.
 
 73, Jim K9YC
>>> 
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> ARS N5GE
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David Ahrendts   davidahren...@me.com   




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Re: [Elecraft] RFI on K3s

[Jim Brown]

Hi Jimmy,

While I've not investigated it myself, I've been told by those who have 
that the bus conductors inside some of these boxes are not very robust. 
In my station, I've made my own cable splices using Power Pole 
connectors. One pair, as short as I can make it, goes directly to the 
K3, another goes to a Rig Runner box that feeds power to other boxes 
that don't draw much current (preamp for Beverages, antenna switching, 
SO2R box, etc.).


73, Jim K9YC

On Mon,6/20/2016 6:54 PM, James Walker wrote:
You may have something there. I use a rig runner device to divide the 
power supply output among several rigs. I’m going to try some rewiring 
to get a shorter, more direct connection. Thanks. 



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Re: [Elecraft] Elecraft] RFI on K3s

[brian]

Interesting.  Putting one on my dishwasher almost completely silenced 
it. It had been S8.


I'm thinking of adding one to the XYL's treadmill.

73 de Brian/K3KO

On 6/21/2016 16:42 PM, Jim Brown wrote:

On Tue,6/21/2016 9:22 AM, brian wrote:

Nothing has been mentioned on what had been standard practice years ago.

That is installing a good RFI filter on the mains right at the station.
These filter can knock things down 40 dB in both directions.



The reason nothing has been mentioned about it is that it doesn't do
much to solve RFI problems. That's because MOST RF noise is coupled by
common mode radiation from systems and common mode reception to systems,
not by differential mode, and these filters do NOTHING to kill common
mode current.

The data sheets for commercial filters quote numbers for "common mode"
suppression, but what the power industry calls common mode is the
voltage between neutral and the green wire. That's NOT what the rest of
the world calls common mode, which is a longitudinal current ALONG the
cable pair, and which causes the cable to radiate (and receive)  like
any other antenna.

More than five years ago, I bought some good commercial power line
filters and mounted them in electrical boxes to put in line with the
output of the Honda 2000i generators that we use for CQP county
expeditions and Field Day. Those filters did NOTHING to suppress the
noise. What DID work was a common mode choke formed by winding 4-5 turns
of the power cable through 5 #31 cores.

73, Jim K9YC

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Re: [Elecraft] RFI on K3s

[Jim Brown]

On Mon,6/20/2016 6:50 PM, K9MA wrote:

Call them what you will, connecting a bunch of station components to a common 
DC power return has to be done very carefully.


Yes, it does. The rules are quite simple, and are articulated in the 
Power Point slides I referenced by a link. It's nothing more complicated 
than proper bonding between equipment, and between that equipment and 
all grounded parts of a building.


73, Jim K9YC


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Re: [Elecraft] Elecraft] RFI on K3s

[Jim Brown]

On Tue,6/21/2016 9:22 AM, brian wrote:

Nothing has been mentioned on what had been standard practice years ago.

That is installing a good RFI filter on the mains right at the station.
These filter can knock things down 40 dB in both directions. 



The reason nothing has been mentioned about it is that it doesn't do 
much to solve RFI problems. That's because MOST RF noise is coupled by 
common mode radiation from systems and common mode reception to systems, 
not by differential mode, and these filters do NOTHING to kill common 
mode current.


The data sheets for commercial filters quote numbers for "common mode" 
suppression, but what the power industry calls common mode is the 
voltage between neutral and the green wire. That's NOT what the rest of 
the world calls common mode, which is a longitudinal current ALONG the 
cable pair, and which causes the cable to radiate (and receive)  like 
any other antenna.


More than five years ago, I bought some good commercial power line 
filters and mounted them in electrical boxes to put in line with the 
output of the Honda 2000i generators that we use for CQP county 
expeditions and Field Day. Those filters did NOTHING to suppress the 
noise. What DID work was a common mode choke formed by winding 4-5 turns 
of the power cable through 5 #31 cores.


73, Jim K9YC

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Re: [Elecraft] OT - FCC Seeks "Noise Floor"

[Dave Cole]

On Tue, 2016-06-21 at 09:11 -0700, David Ahrendts wrote:
> From the commercial side of broadcasting, but can’t we relate:  http:/
> /www.tvtechnology.com/news/0002/eh-fcc-seeks-noise-floor/278840
>  floor/278840>
> Maybe someone knows if the ARRL is commenting on behalf of the amateur
> radio community.
> 
> David A., KK6DA, Los Angeles
> 

I believe the ARRL is involved in this.  Ed, or Mike might speak up...

-- 

73's, and thanks,
Dave (NK7Z)
For software/hardware reviews see:
http://www.nk7z.net

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Re: [Elecraft] Elecraft] RFI on K3s

[Peter Pauly]

The datasheet for this product doesn't say anything about it being twisted.
In fact, they call it parallel in the description.

http://www.belden.com/techdatas/metric/8678.pdf

On Tue, Jun 21, 2016 at 10:48 AM, Walter Underwood 
wrote:

> Belen appears to make a 10 AWG twisted pair cable, but I only see it
> available in 500 foot spools. Search for "Belden 8678”.
>
>
> https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-Pair-Multi-Conductor-Cable/p/B5T00UP-500
> <
> https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-Pair-Multi-Conductor-Cable/p/B5T00UP-500
> >
> http://www.alliedelec.com/belden-8678-060500/70004200/ <
> http://www.alliedelec.com/belden-8678-060500/70004200/>
>
> http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-060500/?qs=GjJS1gozy%2FMvzJLBfKAfoA%3D%3D
> <
> http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-060500/?qs=GjJS1gozy/MvzJLBfKAfoA==
> >
>
> Might be worth organizing a group or club purchase. Or maybe PowerWerx
> could carry it.
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
> > On Jun 20, 2016, at 11:19 PM, Vic Rosenthal 4X6GP 
> wrote:
> >
> > No, unfortunately.
> > There is a large Ace Hardware near me and places to buy building
> materials, but it's the not the same.
> >
> > 73,
> > Vic, 4X6GP
> > Rehovot, Israel
> > Formerly K2VCO
> > http://www.qsl.net/k2vco/
> >
> > On 21 Jun 2016 08:19, Fred C. Jensen wrote:
> >> Home Depot is in Israel too?
> >>
> >> Fred K6DGW
> >>
> >> Vic Rosenthal  wrote:
> >>> Get some no. 10 stranded wire at Home Depot (etc.), double it over,
> put one end in a vise and the other in the chuck of your electric drill and
> twist away. Not shielded, but much better than parallel wires. I suppose
> you could strip some RG-8 if you really wanted to shield it.
> >>>
> >>> Vic 4X6GP
> >>>
>  On 20 Jun 2016, at 22:54, DGB  wrote:
> 
> 
>  Jim ... where does one find #10 twisted pair? Is it shielded?
> 
>  thanks 73 Dwight NS9I
> 
> > On 6/20/2016 12:59 PM, Jim Brown wrote:
> >> On Mon,6/20/2016 10:33 AM, James Walker wrote:
> >> Is it normal to register voltage as low as I’m seeing on my K-3?
> >
> > What you're seeing sounds like IR drop in the DC cable. How long is
> the DC cable between the K3 and the power supply? What wire gauge? Is there
> any equipment (like distribution panel) in between?
> >
> > This is a great application for a short length of #10 twisted pair
> between the PSU and rig.
> >
> > 73, Jim K9YC
> > __
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Re: [Elecraft] Elecraft] RFI on K3s

[Jim Brown]

I'm a big fan of Belden cables, but why go to the trouble of a group 
purchase when it is so easy to make your own twisted pair from lengths 
of stranded cable we can buy at the local big box store? The Belden 
cables referenced are primarily used for loudspeaker wiring in big sound 
systems. I specified a lot of it when I was designing systems like that.


Another point though. Hams in general, and Elecraft in particular, 
should be using twisted pair for loudspeaker and power wiring in our 
stations. It's not a cure for RFI, but it is a positive step, because it 
prevents differential mode coupling of RF to that wiring. Ditto for 
loudspeaker wiring in home entertainment systems. Over the years, I've 
cured lots of RFI to these systems by replacing zip cord, glorified or 
plain, with twisted pair.


73, Jim K9YC

On Tue,6/21/2016 7:48 AM, Walter Underwood wrote:

Belden appears to make a 10 AWG twisted pair cable, but I only see it available in 
500 foot spools. Search for "Belden 8678”.

Might be worth organizing a group or club purchase. Or maybe PowerWerx could 
carry it.



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Re: [Elecraft] Elecraft] RFI on K3s

[brian]

Perhaps rightly so, all this is focusing on RFI getting into the radio 
via the antenna.


Nothing has been mentioned on what had been standard practice years ago.

That is installing a good RFI filter on the mains right at the station.
These filter can knock things down 40 dB in both directions.

73 de Brian/K3KO


On 6/21/2016 15:08 PM, Guy Olinger K2AV wrote:

If one has a source of the red/black #10 zip cord (seemingly very common in
the US), then simply zip it apart, and then twist it yourself. Then you
still have the advantage of the color-coded wires.

The #10 stuff I've got is 2 round insulated #10 medium stranded wires, one
red insulated, one black, tacked together, which separates very easily to a
pair of round wires, ideal for twisting.

The better deal is to keep all leads as short as possible.

73, Guy K2AV

On Tue, Jun 21, 2016 at 10:48 AM, Walter Underwood 
wrote:


Belen appears to make a 10 AWG twisted pair cable, but I only see it
available in 500 foot spools. Search for "Belden 8678”.


https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-Pair-Multi-Conductor-Cable/p/B5T00UP-500
<
https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-Pair-Multi-Conductor-Cable/p/B5T00UP-500



http://www.alliedelec.com/belden-8678-060500/70004200/ <
http://www.alliedelec.com/belden-8678-060500/70004200/>

http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-060500/?qs=GjJS1gozy%2FMvzJLBfKAfoA%3D%3D
<
http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-060500/?qs=GjJS1gozy/MvzJLBfKAfoA==




Might be worth organizing a group or club purchase. Or maybe PowerWerx
could carry it.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)


On Jun 20, 2016, at 11:19 PM, Vic Rosenthal 4X6GP 

wrote:


No, unfortunately.
There is a large Ace Hardware near me and places to buy building

materials, but it's the not the same.


73,
Vic, 4X6GP
Rehovot, Israel
Formerly K2VCO
http://www.qsl.net/k2vco/

On 21 Jun 2016 08:19, Fred C. Jensen wrote:

Home Depot is in Israel too?

Fred K6DGW

Vic Rosenthal  wrote:

Get some no. 10 stranded wire at Home Depot (etc.), double it over,

put one end in a vise and the other in the chuck of your electric drill and
twist away. Not shielded, but much better than parallel wires. I suppose
you could strip some RG-8 if you really wanted to shield it.


Vic 4X6GP


On 20 Jun 2016, at 22:54, DGB  wrote:


Jim ... where does one find #10 twisted pair? Is it shielded?

thanks 73 Dwight NS9I


On 6/20/2016 12:59 PM, Jim Brown wrote:

On Mon,6/20/2016 10:33 AM, James Walker wrote:
Is it normal to register voltage as low as I’m seeing on my K-3?


What you're seeing sounds like IR drop in the DC cable. How long is

the DC cable between the K3 and the power supply? What wire gauge? Is there
any equipment (like distribution panel) in between?


This is a great application for a short length of #10 twisted pair

between the PSU and rig.


73, Jim K9YC

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[Elecraft] OT - FCC Seeks "Noise Floor"

[David Ahrendts]

From the commercial side of broadcasting, but can’t we relate:  
http://www.tvtechnology.com/news/0002/eh-fcc-seeks-noise-floor/278840 

Maybe someone knows if the ARRL is commenting on behalf of the amateur radio 
community.

David A., KK6DA, Los Angeles



David Ahrendts   davidahren...@me.com   




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Re: [Elecraft] Elecraft] RFI on K3s

[Bob Novas]

FWIW - twisted pair calculator - https://www.eeweb.com/toolbox/twisted-pair 

Bob - W3DK

> -Original Message-
> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy
> Olinger K2AV
> Sent: Tuesday, June 21, 2016 11:09 AM
> To: Walter Underwood
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Elecraft] RFI on K3s
> 
> If one has a source of the red/black #10 zip cord (seemingly very common in 
> the
> US), then simply zip it apart, and then twist it yourself. Then you still 
> have the
> advantage of the color-coded wires.
> 
> The #10 stuff I've got is 2 round insulated #10 medium stranded wires, one red
> insulated, one black, tacked together, which separates very easily to a pair 
> of
> round wires, ideal for twisting.
> 
> The better deal is to keep all leads as short as possible.
> 
> 73, Guy K2AV
> 
> On Tue, Jun 21, 2016 at 10:48 AM, Walter Underwood
> 
> wrote:
> 
> > Belen appears to make a 10 AWG twisted pair cable, but I only see it
> > available in 500 foot spools. Search for "Belden 8678”.
> >
> >
> > https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-
> Pair
> > -Multi-Conductor-Cable/p/B5T00UP-500
> > <
> > https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-
> Pair
> > -Multi-Conductor-Cable/p/B5T00UP-500
> > >
> > http://www.alliedelec.com/belden-8678-060500/70004200/ <
> > http://www.alliedelec.com/belden-8678-060500/70004200/>
> >
> > http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-
> 060500/?qs=
> > GjJS1gozy%2FMvzJLBfKAfoA%3D%3D
> > <
> > http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-
> 060500/?qs=
> > GjJS1gozy/MvzJLBfKAfoA==
> > >
> >
> > Might be worth organizing a group or club purchase. Or maybe PowerWerx
> > could carry it.
> >
> > wunder
> > K6WRU
> > Walter Underwood
> > CM87wj
> > http://observer.wunderwood.org/ (my blog)
> >
> > > On Jun 20, 2016, at 11:19 PM, Vic Rosenthal 4X6GP
> > > 
> > wrote:
> > >
> > > No, unfortunately.
> > > There is a large Ace Hardware near me and places to buy building
> > materials, but it's the not the same.
> > >
> > > 73,
> > > Vic, 4X6GP
> > > Rehovot, Israel
> > > Formerly K2VCO
> > > http://www.qsl.net/k2vco/
> > >
> > > On 21 Jun 2016 08:19, Fred C. Jensen wrote:
> > >> Home Depot is in Israel too?
> > >>
> > >> Fred K6DGW
> > >>
> > >> Vic Rosenthal  wrote:
> > >>> Get some no. 10 stranded wire at Home Depot (etc.), double it
> > >>> over,
> > put one end in a vise and the other in the chuck of your electric
> > drill and twist away. Not shielded, but much better than parallel
> > wires. I suppose you could strip some RG-8 if you really wanted to shield 
> > it.
> > >>>
> > >>> Vic 4X6GP
> > >>>
> >  On 20 Jun 2016, at 22:54, DGB  wrote:
> > 
> > 
> >  Jim ... where does one find #10 twisted pair? Is it shielded?
> > 
> >  thanks 73 Dwight NS9I
> > 
> > > On 6/20/2016 12:59 PM, Jim Brown wrote:
> > >> On Mon,6/20/2016 10:33 AM, James Walker wrote:
> > >> Is it normal to register voltage as low as I’m seeing on my K-3?
> > >
> > > What you're seeing sounds like IR drop in the DC cable. How long
> > > is
> > the DC cable between the K3 and the power supply? What wire gauge? Is
> > there any equipment (like distribution panel) in between?
> > >
> > > This is a great application for a short length of #10 twisted
> > > pair
> > between the PSU and rig.
> > >
> > > 73, Jim K9YC
> > > __
> > > Elecraft mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > > Help: http://mailman.qth.net/mmfaq.htm
> > > Post: mailto:Elecraft@mailman.qth.net
> > >
> > > This list hosted by: http://www.qsl.net Please help support this
> > > email list: http://www.qsl.net/donate.html Message delivered to
> > > wun...@wunderwood.org
> >
> > __
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> > list: http://www.qsl.net/donate.html Message delivered to
> > k2av@gmail.com
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Re: [Elecraft] Elecraft] RFI on K3s

[Guy Olinger K2AV]

If one has a source of the red/black #10 zip cord (seemingly very common in
the US), then simply zip it apart, and then twist it yourself. Then you
still have the advantage of the color-coded wires.

The #10 stuff I've got is 2 round insulated #10 medium stranded wires, one
red insulated, one black, tacked together, which separates very easily to a
pair of round wires, ideal for twisting.

The better deal is to keep all leads as short as possible.

73, Guy K2AV

On Tue, Jun 21, 2016 at 10:48 AM, Walter Underwood 
wrote:

> Belen appears to make a 10 AWG twisted pair cable, but I only see it
> available in 500 foot spools. Search for "Belden 8678”.
>
>
> https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-Pair-Multi-Conductor-Cable/p/B5T00UP-500
> <
> https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-Pair-Multi-Conductor-Cable/p/B5T00UP-500
> >
> http://www.alliedelec.com/belden-8678-060500/70004200/ <
> http://www.alliedelec.com/belden-8678-060500/70004200/>
>
> http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-060500/?qs=GjJS1gozy%2FMvzJLBfKAfoA%3D%3D
> <
> http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-060500/?qs=GjJS1gozy/MvzJLBfKAfoA==
> >
>
> Might be worth organizing a group or club purchase. Or maybe PowerWerx
> could carry it.
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
> > On Jun 20, 2016, at 11:19 PM, Vic Rosenthal 4X6GP 
> wrote:
> >
> > No, unfortunately.
> > There is a large Ace Hardware near me and places to buy building
> materials, but it's the not the same.
> >
> > 73,
> > Vic, 4X6GP
> > Rehovot, Israel
> > Formerly K2VCO
> > http://www.qsl.net/k2vco/
> >
> > On 21 Jun 2016 08:19, Fred C. Jensen wrote:
> >> Home Depot is in Israel too?
> >>
> >> Fred K6DGW
> >>
> >> Vic Rosenthal  wrote:
> >>> Get some no. 10 stranded wire at Home Depot (etc.), double it over,
> put one end in a vise and the other in the chuck of your electric drill and
> twist away. Not shielded, but much better than parallel wires. I suppose
> you could strip some RG-8 if you really wanted to shield it.
> >>>
> >>> Vic 4X6GP
> >>>
>  On 20 Jun 2016, at 22:54, DGB  wrote:
> 
> 
>  Jim ... where does one find #10 twisted pair? Is it shielded?
> 
>  thanks 73 Dwight NS9I
> 
> > On 6/20/2016 12:59 PM, Jim Brown wrote:
> >> On Mon,6/20/2016 10:33 AM, James Walker wrote:
> >> Is it normal to register voltage as low as I’m seeing on my K-3?
> >
> > What you're seeing sounds like IR drop in the DC cable. How long is
> the DC cable between the K3 and the power supply? What wire gauge? Is there
> any equipment (like distribution panel) in between?
> >
> > This is a great application for a short length of #10 twisted pair
> between the PSU and rig.
> >
> > 73, Jim K9YC
> > __
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Elecraft@mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to wun...@wunderwood.org
>
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Re: [Elecraft] Elecraft] RFI on K3s

[Walter Underwood]

Belen appears to make a 10 AWG twisted pair cable, but I only see it available 
in 500 foot spools. Search for "Belden 8678”.

https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-Pair-Multi-Conductor-Cable/p/B5T00UP-500
 

http://www.alliedelec.com/belden-8678-060500/70004200/ 

http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-060500/?qs=GjJS1gozy%2FMvzJLBfKAfoA%3D%3D
 


Might be worth organizing a group or club purchase. Or maybe PowerWerx could 
carry it.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Jun 20, 2016, at 11:19 PM, Vic Rosenthal 4X6GP  wrote:
> 
> No, unfortunately.
> There is a large Ace Hardware near me and places to buy building materials, 
> but it's the not the same.
> 
> 73,
> Vic, 4X6GP
> Rehovot, Israel
> Formerly K2VCO
> http://www.qsl.net/k2vco/
> 
> On 21 Jun 2016 08:19, Fred C. Jensen wrote:
>> Home Depot is in Israel too?
>> 
>> Fred K6DGW
>> 
>> Vic Rosenthal  wrote:
>>> Get some no. 10 stranded wire at Home Depot (etc.), double it over, put one 
>>> end in a vise and the other in the chuck of your electric drill and twist 
>>> away. Not shielded, but much better than parallel wires. I suppose you 
>>> could strip some RG-8 if you really wanted to shield it.
>>> 
>>> Vic 4X6GP
>>> 
 On 20 Jun 2016, at 22:54, DGB  wrote:
 
 
 Jim ... where does one find #10 twisted pair? Is it shielded?
 
 thanks 73 Dwight NS9I
 
> On 6/20/2016 12:59 PM, Jim Brown wrote:
>> On Mon,6/20/2016 10:33 AM, James Walker wrote:
>> Is it normal to register voltage as low as I’m seeing on my K-3?
> 
> What you're seeing sounds like IR drop in the DC cable. How long is the 
> DC cable between the K3 and the power supply? What wire gauge? Is there 
> any equipment (like distribution panel) in between?
> 
> This is a great application for a short length of #10 twisted pair 
> between the PSU and rig.
> 
> 73, Jim K9YC
> __
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Re: [Elecraft] RFI on K3s

[Drew AF2Z]

Also, the Elecraft supplied DC zip cord can be twisted by hand pretty 
easily.


RFI from wall-wart SMPS supplies might be improved by twisting their 
cords...


73,
Drew
AF2Z



On 06/21/16 00:44, Vic Rosenthal wrote:

Get some no. 10 stranded wire at Home Depot (etc.), double it over, put one end 
in a vise and the other in the chuck of your electric drill and twist away. Not 
shielded, but much better than parallel wires. I suppose you could strip some 
RG-8 if you really wanted to shield it.

Vic 4X6GP


On 20 Jun 2016, at 22:54, DGB  wrote:


Jim ... where does one find #10 twisted pair? Is it shielded?

thanks 73 Dwight NS9I



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Re: [Elecraft] RFI on K3s

[Amateur Radio Operator N5GE]

Works great!

Do it all the time.  Father showed me how 50 years ago, the same way
Vic describes it ;o)

On Tue, 21 Jun 2016 07:44:19 +0300, you wrote:

>Get some no. 10 stranded wire at Home Depot (etc.), double it over, put one 
>end in a vise and the other in the chuck of your electric drill and twist 
>away. Not shielded, but much better than parallel wires. I suppose you could 
>strip some RG-8 if you really wanted to shield it.
>
>Vic 4X6GP
>
>> On 20 Jun 2016, at 22:54, DGB  wrote:
>> 
>> 
>> Jim ... where does one find #10 twisted pair? Is it shielded?
>> 
>> thanks 73 Dwight NS9I
>> 
>>> On 6/20/2016 12:59 PM, Jim Brown wrote:
 On Mon,6/20/2016 10:33 AM, James Walker wrote:
 Is it normal to register voltage as low as I’m seeing on my K-3?
>>> 
>>> What you're seeing sounds like IR drop in the DC cable. How long is the DC 
>>> cable between the K3 and the power supply? What wire gauge? Is there any 
>>> equipment (like distribution panel) in between?
>>> 
>>> This is a great application for a short length of #10 twisted pair between 
>>> the PSU and rig.
>>> 
>>> 73, Jim K9YC
>> 
>> __
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ARS N5GE

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Re: [Elecraft] External Speaker

[Keith Onishi]

Here is SP3 manual;

http://www.elecraft.com/manual/E740273%20SP3%20Owner's%20Manual.pdf

de JH3SIF, Keith

> 2016/06/21 19:10、Gary Gregory  のメール：
> 
> I was searching the Elecraft website and was unable to find much
> information on the SP3.
> 
> Did I miss something?
> 
> I found the cost and a nice photo but wanted some more detail such as specs.
> 
> Gary
> 
> -- 
> 
> 
> 
> *Gary - VK1ZZ, K3NHLSkype: Gary.VK1ZZhttp://www.qsl.net/vk1zz
> Motorhome Portable*
> *Miss Behavin'*
> 
> 
> *Elecraft K3KPA500FT  #18KAT500FT  #007*
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[Elecraft] K3 - extra boards - K3SYN

[N2TK, Tony]

I am assuming there is are no uses or needs for K3SYN boards, correct? I got
4 to heave out.

 

73,

N2TK, Tony

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Re: [Elecraft] W2 problem

[David Ferrington, M0XDF]

At a guess, because it's simple to crimp. I doubt that the normal twisted pairs 
of CAT5 was the reason to not use it. 

-73 de M0XDF (from my iPhone)

> On 21 Jun 2016, at 11:29, John  wrote:
> 
> . I see elecraft supply a flat 8P8C
> RJ45 cable, so I guess there is an engineering reason for that?

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Re: [Elecraft] W2 problem

[John]

Hi All,

I'd be interested in the answers to this, as my W2 also recently lost the
same R10 component. And especially the answers about the Ethernet/signal
cables too...

73, and a firm left handshake,
John (2E0XLX)

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
STEPHEN BUNTING
Sent: 20 June 2016 16:03
To: elecraft 
Subject: [Elecraft] W2 problem

Hi everyone,

I have a little used W2 wattmeter that has stopped working, but I have
recently had access to a working unit so I could test the display and sensor
unit independently. Both of mine have faults -

The display has lost port nr 1 and it looks like R10 has been damaged on the
PCB. What physical size is this resistor? I can see from the cct diagram
that it is 330R. I don't do much SMD work so don't recognise the physical
sizes.

My 2KW HF sensor displays high SWR and low power into a known good load when
used with my friends "good" W2. I cant see any physical problems, so how do
I go about fault finding this or getting it fixed? 

Can I use a regular Ethernet cable to connect display and sensor? I used one
to test my display with a known good sensor on port 2, but sometimes the
display went haywire whilst on the air. I see elecraft supply a flat 8P8C
RJ45 cable, so I guess there is an engineering reason for that?

Thanks for your advice!

73

Steve, M0BPQ
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delivered to j...@eeek.org.uk

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[Elecraft] External Speaker

[Gary Gregory]

I was searching the Elecraft website and was unable to find much
information on the SP3.

Did I miss something?

I found the cost and a nice photo but wanted some more detail such as specs.

Gary

-- 



*Gary - VK1ZZ, K3NHLSkype: Gary.VK1ZZhttp://www.qsl.net/vk1zz
Motorhome Portable*
*Miss Behavin'*


*Elecraft K3KPA500FT  #18KAT500FT  #007*
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Re: [Elecraft] RFI on K3s

[G4GNX - Alan]

If that question was directed at me, the answer is that my issues were not 
using my K3 and I only needed to turn off the tuner supply.


73,

Alan. G4GNX

-Original Message- 
From: Ramon Tristani

Sent: Monday, June 20, 2016 6:14 PM
To: G4GNX
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] RFI on K3s

How can you detect the drifting if RF if Iyou have to turn off the K-3 and 
the P3?



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